When the principal diagnosis is one of these 26 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
I10
I1A.0
I27.841
I27.849
I87.8
I87.9
I99.8
I99.9
N26.2
I13.0
I13.11
I13.2